[ 1672.503791] br0: port 1(dummy0) entered blocking state
[ 1672.503855] br0: port 1(dummy0) entered disabled state
[ 1672.503893] dummy0: entered allmulticast mode
[ 1672.503948] dummy0: entered promiscuous mode
[ 1672.507080] br0: port 1(dummy0) entered blocking state
[ 1672.507121] br0: port 1(dummy0) entered forwarding state
[ 1672.712766] dummy0: left allmulticast mode
[ 1672.712814] dummy0: left promiscuous mode
[ 1672.712846] br0: port 1(dummy0) entered disabled state